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radical substitution

См. также в других словарях:

  • Radical substitution — In organic chemistry, a radical substitution reaction is a substitution reaction involving free radicals as a reactive intermediate. The reaction always involves at least two steps, and possibly a third. In the first step called initiation a free …   Wikipedia

  • Radical-nucleophilic aromatic substitution — or SRN1 in organic chemistry is a type of substitution reaction in which a certain substituent on an aromatic compound is replaced by a nucleophile through an intermediary free radical species:The substituent X is a halide and nucleophiles can be …   Wikipedia

  • Substitution reaction — In a substitution reaction, a functional group in a particular chemical compound is replaced by another group.[1][2] In organic chemistry, the electrophilic and nucleophilic substitution reactions are of prime importance. Organic substitution… …   Wikipedia

  • Radical (chemistry) — Free radical redirects here. For other uses, see Free radical (disambiguation). Moses Gomberg (1866 1947), the founder of radical chemistry Radicals (often referred to as free radicals) are atoms, molecules, or ions with unpaired electrons on an… …   Wikipedia

  • Substitution — Sub sti*tu tion, n. [L. substitutio: cf. F. substitution.] 1. The act of substituting or putting one person or thing in the place of another; as, the substitution of an agent, attorney, or representative to act for one in his absense; the… …   The Collaborative International Dictionary of English

  • Substitution nucleophile — Substitution nucléophile Sommaire 1 Qu est ce qu une substitution nucléophile? 2 Équation générale de ce type de réaction 2.1 Substitution nucléophile d halogénoalcane …   Wikipédia en Français

  • radical-socialiste — [ radikalsɔsjalist ] adj. et n. • 1871; de radical et socialiste ♦ Qui appartient, est propre au parti républicain radical et radical socialiste, dénomination officielle prise en 1901 par le parti radical. ⇒ radical (II, 4o). Ministère,… …   Encyclopédie Universelle

  • radical socialiste — ⇒RADICAL( )SOCIALISTE, (RADICAL SOCIALISTE, RADICAL SOCIALISTE), adj. et subst. POLITIQUE A. [En parlant d un inanimé] Relatif, propre au courant socialisant et anti opportuniste du parti radical français, qui deviendra officiellement en 1901 le… …   Encyclopédie Universelle

  • substitution reaction — Chem. the replacement of an atom or group of atoms in a compound by another atom or group. * * * ▪ chemical reaction       any of a class of chemical reactions in which an atom, ion, or group of atoms or ions in a molecule is replaced by another… …   Universalium

  • Substitution nucléophile — En chimie organique, une réaction de substitution nucléophile est une réaction de substitution au cours de laquelle un groupe nucléophile, riche en électrons, noté Nu , attaque une molécule électrophile, ayant un site pauvre en électrons, et… …   Wikipédia en Français

  • Radical Governments of Chile — The Radical Governments of Chile were in power during the Presidential Republic from 1938 to 1952.The Radical Party s ideology found its roots in the principles of the 1789 French Revolution, uphelding the values of liberty, equality, solidarity …   Wikipedia

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